Caliper-gage with axially-adjustable bolts.



C- E. JOHANSSONJ ICALIIPER GAGE WITH AXIALLY YADJIUSTABLE BOLTS. APPLICATION FILED VOCT- 29. 1 913. RENEWED JULY BL 1916.

1. 200947, 'Patentd OCt..1 0,1916

Gamma! Specification of Letters Yatent.

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a ti w n rs "Uriel an?) EGHANSSGN,

G ESKILSTUIDTA, S'WEDENf racem s oet. so, rare.

Application filed october 29, 1913, Serial No. 798,133. Renewed .T uly G, 1916. Serial Tao. 107,875.

ToaZZ whom it may concern:

B it known that l, CARL flower!) Jorransson, a sub ect of the King of Sweden,

and resident of Eskilstuna, Sweden, have invented a certain new and useful Improvement in Caliper-Gages with Axially-Adjustable Bolts, of which the following is a specification.

Limit-gages for testing the dimensions of work-pieces are now extensively used in work shops and many of these are adjustable, the belt of one shank being screw-threaded so as to allow the distance between the bolts to be regulated by screwing. In these gages the end-faces of the. bolts, however, often assume an oblique position in relation to each other as the said faces seldom are accu"--. ly at right angles to the axis of the bolts, and the bringing of the axis of one bolt to coincide witn that of the other bolt i axially.

.lie improved gage is shown in the anne "d. drawing in whichme 1 is lateral view oi the gage, while i and are details.

The bolts A, A are exactly adjusted in rigs in their barrels or sockets F. 11 the outer portions of these openings threaded for the reception of ews l), l), the inner ends oi rest against the outer ends of the In. order to prevent the bolts from nng in their sockets, the bolts are provided with guides of any known description. .lh'eierably this guide consists of a pressingscrew l3 acting an angle to the bolt and having conical portion E resting against a lateral face C of the bolt, the said face being parallel to the axis of the latter.

-upon the screw B is tightened. Even if the bolt should be subjected to a considerable strain in measuring, it will retain its position under the pressure of the two screws D and B. lhe sockets F are proportioned so as to protect the threads of the screws D from outside damage. The screw D is placed in such a position relatively to the bolt. that this latter is' pressed against the screw D, when the conical piece E presses against the face on tightening the screw LP), and thus the bolt is secured in position. The conical piece E may consist of a washer of a conical section concentric with the screw B.

Having now described my invention, what I claim as new and desire to secure by Letters Patent is: v in a limit gage the combination of an axially movable bolt having a lateral plane face, with a socket or barrel provided with an opening for the reception of said bolt, screw threads in the outer portion of said opening, a regulating screw in said opening resting with its inner end against the outer end of said bolt and a pressure screw laterally disposed in said socket and having a conical portion'adapted to rest against the lateral. plane face of said bolt for holding the some in position, and for preventing the bolt from turning in its socket substantially as described.

In, witness whereof I have hereunto set my hand in the presence of two witnesses.

CARL EDWARD JOHANSSON.

Witnesses CARL FnANc, JACOB BAoon. 

